Wire-connector



(No Model.)

O D. M. ROBERTSON.

WIRE CONNECTOR.

Patent ed June 2, 1896.

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ATTORNEYS, I

with fira'rns arnn rien.

DUNCAN M. ROBERTSON, OF KEARNEY, NEW JERSEY, ASSIGNOR TO CHARLES H. MCINTIRE, OF NEWARK, NEW JERSEY.

WIRE-CONNECTOR.

SPECIFICATION forming part of Letters Patent No. 561,438, dated June 2, 1896. Application filed April 17, 1896. Serial No. 587,972. (No model.)

.T0 on whom it may concern.-

hereby declare the following to be a full, clear,

and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

The object of this invention is to provide a connector for telegraph, telephone, and other electric wires of simple, strong, and durable construction, reliable in operation, and which connector is capable of being used on wires of various sizes or diameters.

The invention consists in the improved wire-connector, having two adjoining cylindrical channels, which are capable of being increased in diameter and still retain their cylindrical shape; and it further consists in the combination and arrangement of the various parts, substantially as will be hereinafter more fully described, and finally embodied in the clauses of the claim.

Referring to the accompanying drawings, in which like letters of reference indicate corresponding parts in each of the several views, Figure 1 is a perspective view of my improved connector; Fig. 2, a cross-section of Fig. 1, the wires being inserted and also shown in section; Fig. 3, a view similar to Fig. 2, illustrating the same wire-connector when used on wires of larger diameter. Figs. 4, 5, and Gillustrate in views similar to Figs. 1, 2, and 3 a modified form of said connector; and Fig. 7, a front elevation of the connector after being twisted together with the inserted wires.

In said drawings, a represents a strip of metal having its side portions bent upward and inward to form cylindrical-shaped channels b and 0, adapted to receive the wires (Z d, (or e e.) The edges a and a after being bent inward, are bent downward and outward, as clearly shown in the drawings, By this construction the inserted Wires, even before being twisted together with the connector, will be closely surrounded by and in complete contact with the said connector.

The channels I) and c are capable of being increased in diameter without losing their circular sectional shape, as the metal strip forming said channels has a certain amount of elasticity and spring-power. WVhen wires of larger diameter are inserted, the said metal strip will be in close contact with the said wires, as shown in Fig. 3 and as will be inanifest.

In the modification illustrated in Figs. 4, 5, and 6 the metal strip a is provided in its center with an upward depression or ridge a extending through its entire length and adapted to complete the circular or cylindrical shape of the channels I) 0, formed by said metal strip in the manner hereinbefore described.-

In operation, when a joint is to be made,

the ends of the wires, which are preferably rounded off, are inserted from opposite directions into the channels I) and c of the connector and are then twisted together with the said connector-say three or four times, according to its length-whereby the metal strip forming said channels is drawn tight around the said wires and a close and perfect contact obtained.

' From the foregoing description it can be seen that my improved connector is of very simple construction, efficient and reliable in operation, and has the advantage that one standard size can be used for wires of different diameters.

Heretofore separate wire joints had to be made for different-sized wires, and even then did not always fit the wires to be connected,

joints have been constructed, as covered by the United States Letters PatentNos. 347 ,625, 451,933, 541,998, and 557,690; but none of said joints could be used as a universal joint for wires of different diameters.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A wire-connector consisting of .two adjoining connecting-channels circular in crosssection and capable of being increased in diameter without losing its circular shape, and adapted to be twisted together with the wires to be jointed, substantially as and for the purposes described.

2. A wire-connector, consisting of a metal strip bent into the shape of two adjoining connecting-channels, circular in crosssection and capable of being increased in diameter without losing its circular shape, and adapted to be twisted together with the wires to be jointed, substantially as and for the purposes described.

3. A wire-connector, consisting of a metal strip, bent into the shape of two adjoining channels, circular in cross-section and capable of being increased in diameter without losing its circular shape, and having an upward depression or ridge extending longitudinally through its entire length and adapted to complete the circular shape of said channels, and to thus bear on the inserted wires, said connector being adapted to be twisted together with said wires, substantially as described.

4. A wire-connector, consisting of a metal strip bentinto the shape of two adjoining connecting channels, circular in cross section and adapted to adjust themselves to the shape and surface of the wires to be inserted, and to be twisted together with the said wires, substantially as and for the purposes described.

In testimony that I claim the foregoing I have hereunto set my hand this 11th day of April, 1896. Y

DUNCAN M. ROBERTSON.

Witnesses:

ALFRED GARTNER, FELIcIE GARTNER. 

